Location Codes
Take a look at these notable codes. These supposedly help to find out who has looked at these particular functions on your phone. Just text in these codes:
For a swift GPS test: *#*#1472365#*#*
For a Field test: *#*#7262626#*#*
To see the Bluetooth address of the device: *#*#232337#*#
For a Proximity Sensor test: *#*#0588#*#*
To show the Wi-Fi Mac location: *#*#232338#*#*
Hardware Testing Codes
How about trying to see who’s been trying to check out your phone’s hardware? Like the camera, the lights and the software? Here are the codes for that:
For Audio test: *#*#0289#*#*
For information about your camera: *#*#34971539#*#*
To test Back-light/vibration: *#*#0842#*#*
For software and hardware info: *#12580*369#
To test the touch-screen: *#*#2664#*#*
For LCD display test: *#*#0*#*#*